Hi Louis, kernel test robot noticed the following build errors: [auto build test ERROR on 82fe69e63d2b5a5e86ea94c7361c833d3848ab69] url: https://github.com/intel-lab-lkp/linux/commits/Louis-Chauvet/drm-vkms-Code-formatting/20241008-001316 base: 82fe69e63d2b5a5e86ea94c7361c833d3848ab69 patch link: https://lore.kernel.org/r/20241007-yuv-v12-13-01c1ada6fec8%40bootlin.com patch subject: [PATCH v12 13/15] drm/vkms: Create KUnit tests for YUV conversions config: i386-randconfig-013-20241010 (https://download.01.org/0day-ci/archive/20241011/202410110407.EHvadSaF-lkp@xxxxxxxxx/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241011/202410110407.EHvadSaF-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202410110407.EHvadSaF-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>, old ones prefixed by <<): WARNING: modpost: missing MODULE_DESCRIPTION() in lib/slub_kunit.o >> ERROR: modpost: "drm_get_color_range_name" [drivers/gpu/drm/vkms/tests/vkms_format_test.ko] undefined! >> ERROR: modpost: "drm_get_color_encoding_name" [drivers/gpu/drm/vkms/tests/vkms_format_test.ko] undefined! >> ERROR: modpost: "get_conversion_matrix_to_argb_u16" [drivers/gpu/drm/vkms/tests/vkms_format_test.ko] undefined! Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for GET_FREE_REGION Depends on [n]: SPARSEMEM [=n] Selected by [m]: - RESOURCE_KUNIT_TEST [=m] && RUNTIME_TESTING_MENU [=y] && KUNIT [=y] -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki